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physical object > natural object > celestial body > collection of stars > galaxy > irregular galaxy

irregular galaxy
subject			fact

irregular galaxy	has definition A galaxy with amorphous structure and with relatively low mass (108-1010 Msun). Fewer than 10% of all galaxies are classified as irregular.
	is a kind of galaxy
galaxy	has number of stars 106 to 1012
	has catalog galaxy catalog
celestial body	has spectra
physical object	has location or center of gravity
	has angular momentum
	has mass
	has velocity
	has momentum
	has temperature
	has volume
	has extent
	has material

Kinds of irregular galaxy :

• faint blue galaxy (2 facts) - A distant, irregularly shaped galaxy in which a large amount of star formation is taking place.
• IC 1613 (2 facts)
• Magellanic Cloud (2 kinds, 34 facts) - Two relatively small, nebulous stellar systems visible only in the southern hemisphere; the larger is, however, the brightest "nebular" object in the sky. both are members of the local group of galaxies, and in fact seem to be associated, though detached, parts of the milky way system., The Large and Small Magellanic Clouds, the two nearest and largest of the galaxies that orbit the milky way. The Magellanic Clouds lie in the southern sky and cannot be seen from the United States., Two galaxies that lie close to the milky way galaxy. They are visible in the southern skies of Earth., Two small irregular (or possibly barred spiral) galaxies (satellites of the Milky Way galaxy) about 50-60 kpc (LMC, in Dorado) and 60-70 kpc (SMC, in Toucana) distant, visible to the naked eye from the southern hemisphere. Both clouds contain mainly Population I stars. The LMC contains numerous ob stars and at least 10 stars that are an order of magnitude brighter (m_v = - 9) than any supergiants known in our galaxy. It also contains several times our galaxy's concentration of interstellar matter.
• NGC 4214 (3 facts)
• NGC 5195 (10 facts) (M51b)
• NGC 6822 (8 facts)
• Wolf-Lundmark-Melotte (10 facts) (WLM) - A dwarf E5 elliptical galaxy, sometimes considered a member of the Local Group.